Use of Water-Soluble or Water-Dispersible Polymers as Additives in Mineral Building Materials

Abstract

The present invention relates to the use of water-soluble or water-dispersible polymers as additives in mineral building materials. The novel polymers are obtainable by polymerizing alkoxylated derivatives of 3-allyloxy-1,2-propanediol with ethylenically unsaturated mono- or dicarboxylic acids or the anhydrides, esters or mixtures thereof and, if appropriate, with one or more further ethylenically unsaturated monomers C.

1 . A mineral building material composition comprising a mineral building material and a water-soluble or water-dispersible polymer, obtained by polymerizing
 a) at least one alkoxylated derivative of 3-allyloxy-1,2-propanediol (monomer A) and   b) at least one ethylenically unsaturated mono- or dicarboxylic acid or the anhydrides, esters or mixtures thereof (monomer B) and   c) if appropriate, one or more further ethylenically unsaturated monomers C.   
     
     
         2 . The mineral building material composition according to  claim 1 , wherein at least one compound of the formula I 
       
         
           
           
               
               
           
         
         where 
         AO is C 1 -C 12 -alkylene oxide, styrene oxide or a mixture of two or more types thereof, it being possible for the two or more types to be linked either in random or in block form, 
         n and m, independently of one another, are each an integer from 1 to 300 and 
         R1 and R2, independently of one another, are each hydrogen, C 1 -C 30 -alkyl, C 5 -C 8 -cycloalkyl, C 6 -C 20 -aryl, C 1 -C 30 -alkanoyl, C 7 -C 21 -aroyl, sulfuric (mono)ester or phosphoric ester, 
         is used as monomer A. 
       
     
     
         3 . The mineral building material composition according to  claim 1 , wherein at least one compound of the formula II 
       
         
           
           
               
               
           
         
         where 
         R3 and R4, independently of one another, may in each case be identical or different and are hydrogen or C 1 -C 6 -alkyl, 
         R5 is hydrogen, C 1 -C 6 -alkyl or a COOM group and 
         M is hydrogen, a monovalent or divalent metal ion, ammonium or an organic ammonium compound, 
         is used as monomer B. 
       
     
     
         4 . The mineral building material composition according to  claim 1 , wherein the weight average molecular weight M w  of the polymer is from 1 000 to 100 000. 
     
     
         5 . The mineral building material composition according to  claim 1 , wherein an ester of the formula III of (meth)acrylic acid with a polyalkylene oxide 
       
         
           
           
               
               
           
         
         where 
         R6 is hydrogen or a methyl radical, 
         AO is C 1 -C 12 -alkylene oxide, styrene oxide or a mixture of two or more types thereof, the two or more types being linked either in random or in block form, 
         R7 is hydrogen, C 1 -C 30 -alkyl, C 5 -C 8 -cycloalkyl, C 6 -C 20 -aryl, C 1 -C 30 -alkanoyl or C 7 -C 21 -aroyl and 
         p is an integer from 1 to 300, 
         is used as monomer C. 
       
     
     
         6 . A cement dispersant comprising the mineral building material composition of  claim 1 . 
     
     
         7 . A gypsum dispersant comprising the mineral building material composition of  claim 1 . 
     
     
         8 . A polymer obtainable by polymerizing
 a) at least one alkoxylated derivative of 3-allyloxy-1,2-propanediol (monomer A) and   b) at least one ethylenically unsaturated mono- or dicarboxylic acid or the anhydrides, esters or mixtures thereof (monomer B) and   c) if appropriate, one or more further ethylenically unsaturated monomers C.   
     
     
         9 . The polymer according to  claim 8 , wherein at least one monomer C selected from the esters of (meth)acrylic acid with a polyalkylene oxide of the formula III 
       
         
           
           
               
               
           
         
         where 
         R6 is hydrogen or a methyl radical, 
         AO is C 1 -C 12 -alkylene oxide, styrene oxide or a mixture of two or more types thereof, it being possible for the two or more types to be linked either in random or in block form, 
         R7 is hydrogen, C 1 -C 30 -alkyl, C 5 -C 8 -cycloalkyl, C 6 -C 20 -aryl, C 1 -C 30 -alkanoyl or C 7 -C 21 -aroyl and 
         p is an integer from 1 to 300, 
         is used. 
       
     
     
         10 . The polymer according to  claim 8 , wherein at least one compound of the formula I 
       
         
           
           
               
               
           
         
         where 
         AO is C 1 -C 12 -alkylene oxide, styrene oxide or a mixture of two or more types thereof, it being possible for the two or more types to be linked either in random or in block form, 
         n and m, independently of one another, are each an integer from 1 to 300 and 
         R1 and R2, independently of one another, are each hydrogen, C 1 -C 30 -alkyl, C 5 -C 8 -cycloalkyl, C 6 -C 20 -aryl, C 1 -C 30 -alkanoyl, C 7 -C 21 -aroyl, sulfuric (mono)ester or phosphoric ester, 
         is used as monomer A. 
       
     
     
         11 . The polymer according to  claim 8 , wherein at least one compound of the formula II 
       
         
           
           
               
               
           
         
         where 
         R3 and R4, independently of one another, may in each case be identical or different and are hydrogen or C 1 -C 6 -alkyl, 
         R5 is hydrogen, C 1 -C 6 -alkyl or a COOM group and 
         M is hydrogen, a monovalent or divalent metal ion, ammonium or an organic ammonium compound, 
         is used as monomer B. 
       
     
     
         12 . A cement dispersant comprising at least one polymer according to  claim 8 . 
     
     
         13 . A gypsum dispersant comprising at least one polymer according to  claim 8 . 
     
     
         14 . A mineral building material comprising cement, water and at least one polymer according  claim 8  and further conventional aggregates. 
     
     
         15 . A mineral building material comprising gypsum, water and at least one polymer according to  claim 8  and further conventional aggregates.